538602321 has 4 divisors (see below), whose sum is σ = 718136432. Its totient is φ = 359068212.

The previous prime is 538602319. The next prime is 538602341. The reversal of 538602321 is 123206835.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 538602321 - 2¹ = 538602319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538602341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89767051 + ... + 89767056.

It is an arithmetic number, because the mean of its divisors is an integer number (179534108).

Almost surely, 2^538602321 is an apocalyptic number.

It is an amenable number.

538602321 is a deficient number, since it is larger than the sum of its proper divisors (179534111).

538602321 is a wasteful number, since it uses less digits than its factorization.

538602321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179534110.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 538602321 is about 23207.8073285694. The cubic root of 538602321 is about 813.6221067479.

The spelling of 538602321 in words is "five hundred thirty-eight million, six hundred two thousand, three hundred twenty-one".